After boiling water it went from clear to brownish red. I boiled the clear water in a stainless steel pan and as it was boiling it started to become brownish red. The more I boiled it the more pronounced it became. I put the boiled water in a glass and compared it to the same water before boiling and it was clear. Just to further test if this was the water or the pan I used purified water and boiled it in the same pan and it was clear. What's going on? Why is my water brownish-red after boiling? enter image description here

  • Welcome Lee Anne Jarrett! Were you using this water for any outdoor purpose, or just to use in your kitchen? I'm asking because our site is about outdoor activities. However, there is someone who had an issue while doing an outdoor activity (camping), and it seems to be the same problem. The question is referred to in the link posted by @CharlieBrumbaugh. This question might get what we call "closed as a duplicate" because the other was already here and has answers that will hopefully help you. Sep 8 '17 at 21:24
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  • Not a duplicate. agent is likely different. Try this as an experiment: Instead of boiling the water, just set it out in the open for a day or so. If it goes brown, you are seeing colloidal iron. Iron can have two valences Fe++ and Fe+++ The first is water soluble. In the presence of oxygen it reacts to form Fe2O3 which is insoluble. If this is the agent, you will also notice rust stains from dripping faucets and in toilets. A further test: Acidifying the water (couple drops of CLR) will turn it clear again. Sep 13 '17 at 13:42
  • @SherwoodBotsford I do not understand from your description what the difference in setup is between this question and the duplicate. What I mean: Why does the agent you describe work here and not on the other question?
    – imsodin
    Sep 13 '17 at 15:56